According to a study, the proportion of people who are satisfied with the way things are going in their lives is 0.88. Suppose that a random sample of 100 people is obtained. Complete parts (a) through (e) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (c) Describe the sampling distribution of p, the proportion of people who are satisfied with the way things are going in their life. Be sure to verify the model requirements. Since the sample size is V than 5% of the population size and np(1- p) = 2 10, the distribution of p is V with Pp and (Round to three decimal places as needed.) (d) In the sample obtained in part (a), what is the probability that the proportion who are satisfied with the way things are going in their life exceeds 0.90? The probability that proportion who are satisfied with the way things are going in their life exceeds 0.90 is| (Round to four decimal places as needed.) (e) Using the distribution from part (c), would it be unusual for a survey of 100 people to reveal that 81 or fewer people in the sample are satisfied with their lives? The probability that 81 or fewer people in the sample are satisfied is which unusual because this probability less than (Round to four decimal places as needed.) Click to select your answer(s).
According to a study, the proportion of people who are satisfied with the way things are going in their lives is 0.88. Suppose that a random sample of 100 people is obtained. Complete parts (a) through (e) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (c) Describe the sampling distribution of p, the proportion of people who are satisfied with the way things are going in their life. Be sure to verify the model requirements. Since the sample size is V than 5% of the population size and np(1- p) = 2 10, the distribution of p is V with Pp and (Round to three decimal places as needed.) (d) In the sample obtained in part (a), what is the probability that the proportion who are satisfied with the way things are going in their life exceeds 0.90? The probability that proportion who are satisfied with the way things are going in their life exceeds 0.90 is| (Round to four decimal places as needed.) (e) Using the distribution from part (c), would it be unusual for a survey of 100 people to reveal that 81 or fewer people in the sample are satisfied with their lives? The probability that 81 or fewer people in the sample are satisfied is which unusual because this probability less than (Round to four decimal places as needed.) Click to select your answer(s).
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:According to a study, the proportion of people who are satisfied with the way things are going in their lives is 0.88. Suppose that a random sample of 100 people is
obtained. Complete parts (a) through (e) below.
Click here to view the standard normal distribution table (page 1).
Click here to view the standard normal distribution table (page 2).
(c) Describe the sampling distribution of p, the proportion of people who are satisfied with the way things are going in their life. Be sure to verify the model
requirements.
Since the sample size is
V than 5% of the population size and np(1- p) =
2 10, the distribution of p is
V with Pp
and
(Round to three decimal places as needed.)
(d) In the sample obtained in part (a), what is the probability that the proportion who are satisfied with the way things are going in their life exceeds 0.90?
The probability that proportion who are satisfied with the way things are going in their life exceeds 0.90 is|
(Round to four decimal places as needed.)
(e) Using the distribution from part (c), would it be unusual for a survey of 100 people to reveal that 81 or fewer people in the sample are satisfied with their lives?
The probability that 81 or fewer people in the sample are satisfied is
which
unusual because this probability
less than
(Round to four decimal places as needed.)
Click to select your answer(s).
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